. >> schieffer: today on "face the nation," the president issues a new warning to russia over ukraine, and in the middle east, a surprised announcement from the palestinian side. is it an overture to restart the peace talks? we'll start there with israeli prime minister benjamin netanyahu. we'll have the latest from ukraine and get the take on that from the administration and capitol hill. plus, former presidential candidate rick santorum on georgia's new gun law and a unique event in catholic church history. 60 years of news because this is "face the nation." captioning sponsored by cbs